Combined colter and jointer



(No Model.)

A. 0. SCREAM.

Combined Oolterand JOiIItGIH- N o. 232,370. Patented Sept. 21,1880.

N-PETERS, PHOTOUTHOGRAPHER, WASHINGTON. Dv c,

U ITED STATES PATENT OFFICE.

ADELBERT c. SOHRAM, or FLINT, MIOHIGAN.

COMBINED COLTER AND JOINTER.

SPECIFICATION formingpart of Letters Patent No. 232,370, dated September 21, 1880.

Application filed June 25, 1880.

To all whom it may concern:

Be it known that I, ADELBERT G. SCHRAM, of Flint, in the county of Genesec and State of Michigan, have invented an Improvement in a Combined Oolter and J ointer, of which the following is a specification.

My invention relates to colter and jointer attachments to plows; and it consists in certain details of construction in such attachments, as hereinafter more fully set forth, and pointed out in the claim.

In the drawings, Figure l is a perspective of my invention as shown provided with a horizontal arm, by which the whole is secured to the standard of a plow. Fig.2 is aside elevation of the same with thejointer removed. Fig. 3is an elevation ofthat side ofthejointer which when in place is next the face of the colter.

In the accompanying drawings, which form a part of this specification, A represents a horizontal arm, designed to be secured to the standard of a plow by any suitable and convenient fastening. The front end of this arm terminates in a downwardly-projecting colter, B, which is provided with a vertical slot, at, the sides of which, on the outerface, are chamfered or countersunk to allow the head I) of the bolt which passes through said slot to secure the jointer in place to have a vertical motion in said slot and prevent the bolt-head from projectin g beyond the outer face of the colter.

O is the jointer, cast with a flange, (I, through which the bolt 1) passes to secure the jointer to the colter, and eis a lug cast upon said flange, and designed to project through the slotin the colter and act as a guide and stop to hold the jointer in place and prevent its turning upon the bolt b.

By this arrangement the cutting-edge of the colter will always be in advance of the jointer, and the latterwill be verticallyadjustable upon (No model.)

the former to determine the depth of the out of thejointer.

I am aware that a mold-board has heretofore been adjustably secured to a plow-colter, and 5 I therefore lay no claim to such construction, which is objectionablebecause of the difficulty of adjusting and securing a curved mold-board to the plane surface of the colter.

I am also aware that an angular casting has heretofore been constructed, one face of which is flat and adapted to be adjustably attached to the face of a plow-colter, and the other face curved to receive a mold-board and plow-point bolted thereto, as shown in Letters Patent 5 granted to H. E. VVisner for a combinedjointer and colter, dated November 25, 1879, N 0. 222,113, and I therefore lay no claim to such invention.

In my construction I dispense with the angular plate to which the mold-board is secured and cast my plate and mold-board all in one piece, thereby rendering the construction sim' pler and cheaper, and I dispense with the fastenings of the mold-board to the plate, which are liable to become loose.

I 'am also aware that plow-colters have heretofore been made of an angular form, and I therefore lay no claim to such construction.

What I claim as my invention is- The combination, with the curved jointerG, provided wih the flange (1, having a bolt-hole and pin, 0, all cast in one piece, of the angular colter A B, provided with the inclined slot a,

having chamfered edges, and headed bolt 11, the

whole constructed, arranged, and operated in the manner and for the purpose set forth.

ADELBERT G. SGHRAM.

Witnesses H. S. SPRAGUE, THEO. S. DAY. 

